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Low power SC CMFB folded cascode OTA optimization | IEEE Conference Publication | IEEE Xplore

Low power SC CMFB folded cascode OTA optimization


Abstract:

This paper describes a design of a switched capacitor common mode feedback (SC CMFB) folded cascode operational transconductance amplifier for low power and high-speed si...Show More

Abstract:

This paper describes a design of a switched capacitor common mode feedback (SC CMFB) folded cascode operational transconductance amplifier for low power and high-speed sigma-delta modulators. An algorithmic driven methodology is developed ending to the optimal transistor geometries. Using a 0.35 mum CMOS process, the OTA circuit has been designed to achieve 82.94 dB DC gain, 526 MHz unity-gain frequency, 560 V/mus slew rate with 1.8 V power supply voltage and a power consumption of only 1.19 mW. The simulated OTA circuit has been applied in a SC integrator to illustrate the versatility of the circuit.
Date of Conference: 31 August 2008 - 03 September 2008
Date Added to IEEE Xplore: 17 November 2008
ISBN Information:
Conference Location: Saint Julian's, Malta

References

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